Texas Instruments CPG004DRV88 EVM Series, User Manual, Page: 10 / 21

Time
Base
A
c
c
e
l
R
a
te
Pulses Per Second
The Windows Application
www.ti.com
Figure 11. Turning the Stepper Motor
The Windows application frame to control speed, acceleration and deceleration, as well as motor start and
stop, is shown in
Figure 12 .
Figure 12. Speed Control
Pressing the “Start Steps” button, will start the timer and pulses will be generated at the rate specified by
the decimal number at the PPS text box. Once the “Start Steps” button is pressed it becomes the
“Stepping” button. Press the “Stepping” button to stop the stepper motion.
When the motor is stepping, the “Update Speed” button becomes enabled. Speed can be updated by
modifying the PPS text box and then pressing the “Update Speed” button. The “Speed Button is disabled
every time the motor is not turning because the stepping has been halted by pressing the “Stepping”
button.
3.5.2 Step by Step Control
The step control frame has a series of tools to control the stepping of the motor on a predetermined
number of steps fashion.
The “Pulse Step” button allows for a single step to be issued. Remember that a STEP takes place when
STEP goes from LO to HI.
10 CPG004_DRV88xx Evaluation Modules SLVU361B – April 2010 – Revised October 2013
Submit Documentation Feedback
Copyright © 2010–2013, Texas Instruments Incorporated